Last Modified: Oct 16, 2026
Affected Product(s):
BIG-IP APM
Known Affected Versions:
17.5.1.3, 17.5.1.4, 17.5.1.5, 17.5.1.6, 17.5.1.8, 17.5.1.9
Fixed In:
21.1.0.3, 17.5.1.10, 17.1.3.6
Opened: Mar 22, 2026 Severity: 3-Major
After a forced TMM core, the ECA process may use abnormally high CPU indefinitely.
- The ECA process sustains high CPU usage. - APM services may degrade. - The issue persists until the ECA process is restarted.
This issue occurs when: 1. TMM core is forcibly generated. 2. ECA attempts to fetch random numbers from TMM while TMM is unavailable or restarting.
Restart the ECA process to restore normal CPU utilization
N/A